How the setting of the vector surge relay shall be calculated when the relay is to be used for Grid islanding application?

0 Answers  

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What happens if 25 Hz frequency is applied for 400/200,50 Hz single phase Transformer.Will Voltage increase ?

2 Answers   Bhel, Dawlance, IBM,

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what is the difference between the HT Cable and LT Cable ?

28 Answers   Intergulf, Prabhat Cables,

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why and how fault current flows through ground?

1 Answers  

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do we use links in a dc circuit?if so what s its use in it?

0 Answers  

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what is difference between VAT & CST

1 Answers   MIT,

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mostly the questions were from machines... d.c. machines, transformer, synchronous and induction all theory paper........ few from power system... but the level of paper was easy.....

0 Answers   IFFCO,

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what is the procedure for cable sizing or on what basis we will calculate the size of cable?????

6 Answers   ANG, Focus, Mecon,

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dear all, in motor operation , motor is of 100 hp and bimetal relay setting is 130 amp, if relay is getting tripped on 120 amp balance current what can be the reason? Relay is newly replaced. I dont know but is there any frequency effect in thit case? Can frequency variation affect bimetal relay operation?

1 Answers  

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why can tv operate at low voltage??

2 Answers  

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Why do you have to use Protecion relay with the function MTB ( Mechanical Trip Button ) for electrical system.

0 Answers   DT Technologies,

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What are the different types of hydro schemes?

0 Answers  

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